The part was a real pain as we had to mill in a flat spot to keep the incoming tube straight as it is being bent. The flat spot is critically positioned tangent to the radius of the groove. If you miss, you put ugly "bite" marks in the tube and we don't like ugly!
So, Sandwich milled an exact female of the tool to hold it exactly in place. That way, there is NO way X Y Z or A can move.
